초록 ▼

A rear side of an operator's cabin body is resiliently supported by a rubber mount, and a front side of the operator's cabin body is resiliently supported by a spring mount, of which a spring constant is set to be smaller than that of the rubber mount. Accordingly, a vibration transmissibility of pi

A rear side of an operator's cabin body is resiliently supported by a rubber mount, and a front side of the operator's cabin body is resiliently supported by a spring mount, of which a spring constant is set to be smaller than that of the rubber mount. Accordingly, a vibration transmissibility of pitching transmitted from a revolving frame to the operator's cabin body can be kept small, and pitching is damped by an oil damper which constitutes the rubber mount. Further, bounce and rolling transmitted to the operator's cabin body are converted into pitching for attenuation of vibration.

대표청구항 ▼

[ We claim:] [1.] A working machine with an operator's cab, having a support frame, a cab body mounted on said support frame, and a cushioning support means provided between said cab body and said support frame to damp transmission of vibrations from said support frame to said cab body,said cushioni

[ We claim:] [1.] A working machine with an operator's cab, having a support frame, a cab body mounted on said support frame, and a cushioning support means provided between said cab body and said support frame to damp transmission of vibrations from said support frame to said cab body,said cushioning support means including at least two units of a first anti-vibrational mount located in laterally spaced positions under one of front or rear end portions of said cab body to support said cab body resiliently while attenuating vibrations thereof, and at least two units of a second anti-vibrational mount located in laterally spaced positions under the other of said front or rear end portions of said cab body to support said cab body resiliently while attenuating vibratins thereof, racterized in that:said first anti-vibrational mount is located between said support frame and said cab body, and constituted by a liquid sealed-in type rubber mount internally containing a highly viscous liquid in a sealed state; andsaid second anti-vibrational mount is located between said support frame and said cab body, and constituted by a spring for resiliently supporting said cab body and an oil damper for attenuating vibrations of said cab body, said spring of said second anti-vibrational mount having a smaller spring constant than that of said first anti-vibrational mount.